LAWYER PROFILE

Marnix Leijten

Europe 2026

De Brauw Blackstone Westbroek

Ranked in 3 practice areas

Arbitration

Netherlands

2 years ranked

Litigation

Netherlands

2 years ranked

Arbitration (International)

Europe-wide

1 year ranked

About

Provided by De Brauw Blackstone Westbroek

Europe

Practice Areas

Arbitration, Litigation, and Mass Claims & Class Actions

Career

Marnix has 25 years of experience as counsel on dozens of major disputes in international arbitration and litigation across many sectors. He acts as a trusted advisor to clients on their arbitration and cross border litigation challenges. Since 2010, Marnix has been recognised by the major legal guides as a leading arbitration and litigation practitioner in the Netherlands, and he is the only Dutch lawyer ranked by Chambers in Band 1 for both arbitration and litigation.

Personal

- Vice-President of the ICC International Court of Arbitration since 2015, and a member of the ICC court since 2006

- Co-chair of the ICC Commission’s Task Force on Emergency Arbitration

- An active member of the ICC’s Institute of World Business Law, the ICC’s Commission on Arbitration, ICCA and the IBA Arbitration Committee

Key sectors

Energy and UtilitiesEnvironmental and Waste

Chambers Review

Provided by Chambers

Chambers European Guide

Arbitration - Netherlands

Band 1

Individual Editorial

Marnix Leijten is a leading arbitration lawyer who is regularly sought out by governments, public entities and energy companies to act on arbitration proceedings. His practice covers the enforcement of arbitral awards, contractual breaches and supply agreement disputes and he is well versed in multi-jurisdictional matters.

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Litigation - Netherlands

Band 2

Individual Editorial

Marnix Leijten is a prominent dispute resolution lawyer in the Netherlands. He has notable experience in matters concerning the enforcement of previous judgments, damages claims and climate litigation.

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Arbitration (International) - Europe-wide

Band 5

Individual Editorial

Amsterdam-based Marnix Leijten of De Brauw Blackstone Westbroek is reputed for his activity as arbitration counsel in both investor state and commercial arbitration. He is highly active for sovereign states and energy companies.

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Strengths

Provided by Chambers

He is one of the best in this field.
ArbitrationChambers European Guide
Marnix Leijten is a transformational lawyer with incredible dedication to getting justice done.
ArbitrationChambers European Guide
Marnix Leijten is outstanding and one of a kind.
ArbitrationChambers European Guide
Marnix Leijten brings a wealth of experience and strategic insights from a litigation perspective.
LitigationChambers European Guide
Marnix Leijten is a very experienced lawyer with a great understanding of our business.
LitigationChambers European Guide
Marnix Leijten is strategic and offers very sound judgement.
LitigationChambers European Guide